Indicator.



J. T. CAMPBELL.

INDICATOR.

APPLICATION FILED JUNE16.1918.

Patented Aug. 25 .1914.

'nected with that of the tank.

a in ach'ine plan showing the "corresponding parts in UNITED STATES PATENT ()FFICE.

JOHN T. CAMPBELL, OF NORFOLK, VIRGINIA, ASSIGNOR OF ONE-HALF TO CLIFTON G. KEESEE, OF NORFOLK. VIRGINIA.

INDICATOR.

Patented Aug. 25, 1914.

" Application filed June 16, 1913. Serial No. 773,990.

by the machine while the same is out of his possession and in that way detect when the has been surreptitiously used by a chauffeur or other person, and determine the' extent of the unauthorized use.

'With the foregoing in mind, the invention will be fullyunderstood from the following description and claims, when'the same are read in connection with the drawings, ac-

' coinpanying and forming part of this specification, in which: a

Figure 1 is a vertical section, partly in eleiiation, of the a paratus constituting the best ractical em odiment of my invention that have as yet devised. Fig. 2 is adetail dial. face and the indicator "hands or pointers above the same.

Similar numerals of reference designate both views of-the drawings.

' In furtherance of my invention I arrange in the gasolene tank 1 of an automobile an uprighttube 2 having apertures 3 atits lower end through which its interior is con- I also arrange on the tank 1 a filling tube 4 having a funnel and also having a reduced portion 6 that depends into and designed to communicate with the interior of the tank 1, as hereinafter described.

Arranged above the tank 1 and preferably at one side of the filling tube l is a casing 7, and superimposed on the casing 7 is a sub-casing 8 which has a dial face 9 on its bottom and also has a transparent upper may be prevented with the purpose of departure from the I prefer, howl said gear 16 ever, to accomplish such. purpose through the medium of fixed upright rods 12 which rest in apertures provided in the float and serve to effectually prevent rotary motion of the float without interfering with vertical movement thereof.

J ournaled at its lower and upperends in suitable bearings and resting in the center of the tube 2 is a shaft 13. The portion of the said shaft within said tube 2 is twisted, and is adapted to extend through an oblong aperture in the float 11, so as to assure upward and downward movements of the float being attended by rotation about its axis. At its upper end the 13 has fixed thereto a hand 14, designed to cooperate with the inner graduated scale 15, Fig. 2.

Mounted on the upper flat portion of the shaft 13 so as to turn with the shaft and. move vertically thereon is a gear 16. The

is provided with a circumferentially grooved extension 18' which receives in its groove of the shaftshaft cally swinging lever 20, the other arm of which terminates in a cup 21 having a small drain aperture 22. The said lever is returned to and normally held in a yielding manner in the position shown through the medium of a 'retractile spring 23, and it Will be noticed in this connection that vertical movement of the gear 16 as well as vertical movement. of the cup 21 are controlled by said spring through the medium of said lever.

Journaled and adapted to freely turn the upper wall of the casing f is the sleeve of a spur gear 24*. that loosely receives the upper portion of the shaft 13 and is provided with a cooperate with the outer circular graduated scale 26, shown. in Fig. 2.

Suitably connected with the upper the casing 7 wall of is a spring-controlled dog 27 designed to cooperate with the gear 21 and prevent casual or too free rotation of said gear, while 1ournaled in the lower and upper walls of said casing is a shaft having fast thereon spur gears 28 and 29; the gear 28 hand or pointer 25, designed to,

being for cooperation with the gear 16, and

the gear 29 being intermeshed with and adapted to impart rotary motion to the gear 241.

In the practical use of my novel indicator,

, gasolene in the tank 1.

gasoleno is poured into the tank 1 through the filling tube *t. During the said pouring and in fact at the connncncement thereof, the outer arm otf'the lever '20 is depressed by the weight of the gasol'ene in the cup 21, and hence the inner arm ot said lever and the gear 16 are raised and the latter is intermeshed with the gear 28 so that as the tloat 11 is raised by the gasolcne and the shaft 13 is rotated, the gear 16 through the gear 28, shaft 30 and gear 29 will rotate the gear 2t and the hand 25 thereon, where upon the said hand 25 by cooperation with the scale 26 will indicate the amount of gasolene placed in the tank. The rotation of the gear 28 through the gear 16 will continue during the pouring of gasolene into the tank 1 and for a brief period after such pouring2'. e., until the gasolene drains through the aperture 22 from the cup 21, whereupon the sprin z'lll will rock the lever 20 and move the gear 16 downwardly out of engagement with the gear 28. From this it follows that after the putting of gasolene in the tank 1, the hand 25 will remain in the position to which it is moved by the upward movement of the float l1, and this independently of rotation of the shaft 13 due to downward movement of the float "-11 as when gasolenc passes from the tank incidental to use of the car. When the float 11 gravitates because of gasolene passing from the tank 1, the shaft 13 and the hand 14- will be turned in reverse direction, and the hand will indicate the amount of gasolene that is taken from the tank and is consumed in the operation of the car. From this it follows that by making note of the positions of the hands 25 and 1% when the car is put in the garage, the owner is enabled to tell when he again takes possession of the car whether or no it has been operated while out of his possession. In this connection it will be'manifest that the supply of gasolene in the tank 1 is surreptitiously replenished while the car is out or the possession of the owner, any change in the position of the hand will make such fact patent to the owner and put him on notice that the car had been operated without authority. It will also be manifest that the changed position of the hand 14 will apprise the owner of the unauthorized use of the machine, irrespective of whether or no the position of the hand 25 changed by the putting of a fresh. supply oi It also to be understood from. the foregoing that the hand 25, which rotates in only one direction, tends to sum up the total amount of liquid supplied at dill'erent times to the tank.

Having described my invention, What I claim and desire to secure by Letters-Patent, is:

1. In an indicator, the combination of a;

tank, a vertically-movable float controlled by liquid in the tank and held against rotation, a shaft constructed and arranged to be rotated by vertical movement of the float and provided with a hand, a gear mounted on the shaft to turn therewith and move vertically thereon, a gear movable independently of the shaft and having a hand, a dial having scales complementary to the hands, gearing connected with the latter gear and arranged to be engaged and moved by the vertically movable gear, a tube through which the tank is charged, a vertically swinging lever having one of its arms connected with the vertically movable gear and also having a cup on its other arm, arranged to receive liquid from the said tube and provided with a drain aperture, and a spring for returning said lever to its normal position.

2. In an indicator,- the combination of a tank, a vertically-movable float controlled by liquid in the tank and held against rotation, a shaft constructed and arranged to be rotated by vertical movement of the float, a gear mounted on the shaft to turn therewith and move vertically thereon, a gear movable independently of the shaft and having a hand, a dial having a scale co1nplementary to the hand, gearing connected with the latter gear and arranged to be engaged and moved by the vertically movable gear, a tube through which the tank is charged, a vertically swinging lever having one of its arms connected with the vertically movable gear and also having a cup on its other arm arranged to receive liquld from the said tube and provided with a drain aperture, and a spring for returning said lever to its normal position.

3. In an indicator, the combination of a tank, a pointer, a graduated scale complementary thereto, means controlled by the rise and tall ofliquid in the tank for moving said pointer, a second pointer, a graduated scale complementary thereto, a driving connection for the second pointer, comprising a movable element actuated by the rise and fall of liquid in the tank and adapted to be engaged with and disengaged from the re mainder ot' the driving connection, means tor moving the said element into engage ment with the remainder of the driving counection when liquid is poured into the tank, said means being actuable by the pouring of liquid into the tank, and means for moving said element out of engagement with the remainder oi the driving connection when the supply of liquid to the tank is discontinued.

4. In an indicator, the combination of a tank, a movable pointer. means controlled by the rise of liquid in the tank, connections whereby said means control said pointer, said comiections being constructed and arranged to be interrupted and reestablished, In testimony whereof I have hereunto set means for establishing the said connections my hand in presence of two subscribing wit when liquid is placed in the tank, said means nesses.

being actuable by the pouring of liquid into JOHN T. CAMPBELL. 5 the tank, and means for interrupting the Witnesses:

c'onnections'when the placing of liquid in W. R. PAYNE,

the tank is discontinued. J. H. GLASS. 

